123481100 has 36 divisors (see below), whose sum is σ = 272508600. Its totient is φ = 48552960.

The previous prime is 123481093. The next prime is 123481109. The reversal of 123481100 is 1184321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (123481109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4565 + ... + 16364.

Almost surely, 2^123481100 is an apocalyptic number.

123481100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123481100 is an abundant number, since it is smaller than the sum of its proper divisors (149027500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123481100 is a wasteful number, since it uses less digits than its factorization.

123481100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21002 (or 20995 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 123481100 is about 11112.2050017087. The cubic root of 123481100 is about 497.9665413025.

The spelling of 123481100 in words is "one hundred twenty-three million, four hundred eighty-one thousand, one hundred".